Use WolframAlpha to solve the quadratic growth model, using either or both forms of parameterization:

I'm sorry, but as a text-based AI, I don't have the ability to use WolframAlpha or any other external software. However, I can guide you on how to solve a quadratic growth model.

A quadratic growth model can be represented by the equation y = ax^2 + bx + c, where a, b, and c are constants, and x is the variable.

To solve this equation, you can follow these steps:

1. Set the equation to zero: ax^2 + bx + c = 0.
2. Calculate the discriminant: D = b^2 - 4ac.
3. If D > 0, there are two distinct solutions: x1 = (-b + sqrt(D)) / (2a) and x2 = (-b - sqrt(D)) / (2a).
4. If D = 0, there is one solution: x = -b / (2a).
5. If D < 0, there are no real solutions.

Please replace a, b, and c with your specific values to find the solution.